Gyratory sifter.



PATENTED APR. 24, 1906.

A. G. BRANTINGHAM.

GYRATORY SIFTER.

APPLICATION FILED MAY 11, 1905.

2 SHEETS-SHEET 1 ym two so v nary opcrulipn sf Alipliudillwl a. E Lily 11, 2 tL-psusing is n sprrnlvuiu-n rl; ni lwurng nr gl'lllllilif mil t .a'lun ihuir d shafts urn mulllil'il in u-nrings fixedly neutral in tin building luau: hurry strains upon {he building sKruL-lur in npmuii'in. A consliruciinn wlnerein in; .SLEPPUIib for llnr siller slrurt uri. and also fur f n" shalt arr uz'r. "Yielding character is ihierc 'rnbl'u. .ll' ins lxcn (liscnverml that such silrers win be suspended up): lie 'ilaln or pliilitll}'-tl;ll nuclei] winding-.11 an us {in h (iulinwlike nun'eniei redevz-a the liuilili v; ich are mes-en;

M mi

. Nii .l mud, and thus nimitated ti; ii'npw'tthe reqired gyratory inn'veznent in 151.; in such Sifters as heretofore 6*.)[1Sl1llflfi3il the shaft and the sifie have traveled tugrtlirr, so that both lnive partaken of the gyratury HUNT)" ment with obvious hinges the chic? of which can unly n "CTL'UJH? by a unnslrnulion wherein tin: shail. -lull," have only a Lin? tarry movement and in; w: the gyraitory i'um'iment. i i'urep willed etcermuz c ill shalt and the parts are we,

l time for a *ly to ls'tlar will be men-t eqzml to I n 1- while the snail rcuunn sin. 01" substantially in illlllllli'l' H1 in lungs, as

in a siler SJSPCKZL in qiwstion re is n tunic-nu it is called, at the beginning in" when the iftar is '1" nilici words, the Eli I uwn on {side of .'t

{he one-ruliun but in mntiu x, ir-r, in

l f 'v Lnul ii is Spa-Lificziiinu or Lenore I numb.

in lu m an vnlurgi-d s inslirulud l1}; and 3,

i Jlfliih iii. Uliililllllfi.

.uq iii TULliDU, (uni).

NFTEFL Patented April 24, 1906.

whirl) it lruwls ul'tvr mm sirur' us gun nr rvurlwd the roguw; lull wliirh il isdi-sigznwl l1)llzl\'(.

is u lurilnnr ulijui'i ul' my invention In gnmidv nun-ins by lllt'il [his lunging sludl lw rvslrninml duringilu' iniiinl stages of ilw opcrzdiuin lud r-xlm'li sludl 1nd lHlYL. i llo vll i'rl 1' mnununirulr uny oi the i l jvclim1ul lv his v' ruins (u [hr buildin id'tcr Llusil'tvr ha lm-n put in upilnlinn nnd has I'LllCllUll its rvgeilnr inulinn. l nrruniplish ihis l)l)j0(l by }i i i\'l(lllif, u bridgr-trvv carrying n sl0p-l 0ul= mg i'm' nu lmn yr vud ml the sluil'l, said bridgeirvv Ming iiulnpczzdi-nt vi the sil'lvr structuriand lllillfpilll'l fllll)" mnnntml The supports nl' said inri arm, lilw those ml the siltvr slim-turn i .ril, urn llvxihly or pivulully cunnuuird, so us (i: umid viunniunicnting tholn-ni'y lnirrul slrnius runsi-tnlcutupon the npvrzniim in the building; but in order to resiruin Lin:- idijvwlluuulilc lunging during llue nitial siugvs ul' lhc upvrulinn lpruvidu menus in" unich tho pUs'SlblL lru'rul (if the bridgelimited i .11.: 110i possible to prevent all 'qvruznry llllJ'i'iBlllilll- Of the slud'L under nll i nlthuhgh suuli movement is sub- Llllll'llllil'fll when Lhc nnichinc is doinnnry \\'()I'l\'. When it is under funded Ur i-"vorlnznlvd, however, the iu0v0 nmut is inclined m su increase or diminish as in full lwlnw 1.3K {axcccd the throw of the cc ceulrics, and in such cnsus the shaft itself i'ill partici mtc to some extent in the gymlorv nmvenn-nt of the silt-er. 'Thu machine is, iowm'i'r, 1l)stunliully sell-balancing and srll-rugnlnling.

Tin? uuizrunpunying drawings illustrate n uuni'hinc embodying my present imuntion.

Figure} l is i sidi' t'lCVilllUll (d n sil'lcr of the rlmrm'fer in questinn; Fig. .3, u ccntrul vortin lnnui View thvrnnl' at the point indiirutlcd by the drdilczl liiuyll 2 in Fig 1;Fig. 3,

secliuunl plain \'l( W us seen when luulcing dnwnviurdly friun Lhe (loans! line 3 3 2; and l i a a detail surliuunl vivw, nln, us shun lrmu (he points 5110 dolled linvs 4 4 in Figs. 2

V "1hr s'irurturn is or uluy lm any suit- Lible siructuru nl lluuluimrlcr in quvstinn and nduplrd to contain u svrivs nl' sivvcs (not slwwn) suituldr for flu purpose r0- q uirvd. 'lhisslruclurv suppurlud by suitanh rods 23 lruin u pnint nvurlurml, which rods are sulliciunily lluxiblu or yielding to the sitter structure appropriate to the sitting 5 operation. A shaft 31 is arranged vertically and centrally in said sitter structure and can ries the lly-wlurcls 32 and 33 at or near its lower and upper cms. Suitable eccentric flanges 34 and 35 are provided on these llywheels, which engage with corrcs )onding flanges Blond 25, secured rigi l to the sitter structure 21. Weights, as 37, are secured to these ily-wheels and constitute in the construction shown the menus which uct oppositely to the incrtizrof the sitter structure and govern the gyrotory movement of the latter. Through the comparatively large openings through the center of these hinge structures 24 and 25 the shaft 31 passes, said 0 enings being sufiicient in size to permit the s aft to remain in position without interferin with the gyratory movement of the sitter.

pon the shaft 31 at or near its lower end is a pulley 36, by which it is driven. The construction might be so modified as to pnske the fiy-wheels 32 also serve as such pul- The lower end of the shaft 31 is mounted in a suitable step-bearing, as 41, in a yield ingly-mounted bridge-tree lZ. This bridgetree carries idler-pulleys 43, and motion is imparted to the shaft 31 by c belt running from the pulley 36 thereon over said idlerpulleys 43 to a ullcy 51 on a drivin shnft 52, as indicated y the dotted lines in Ed 1 and 2. As the distance between the she t 31 and the pulleys 43 is a constant or unvsrying one, notwithstanding that the structure upon which they are mounted Ina swing about to a. certain extent, and as the c istance between the pulleys 43 and the driving-pulley 51 is comparatively so great as to make the chcn go in distance between them (as the structure carrying the pulleys 43 swings) ineppreciable, it will be readily seen that any swinging about of the shaft 31 when the sitter is in motion will not ap ,recisbly alter the driving cspability of the elt.

In the construction illustrated in the drawings forming part of the present application the bridge-tree is supported by long suspending-rods 71 from overhead, the point of suspension, as shown in said drcwings, being substentiallythc some. as that from which the Sifter structure itself is carried. This forpn of support of the bridge-tree, if no restraining means were rovidcd, would permit of the objectionable lunging hereinbefore described. I therefore provide stops by .rnesns of which the possible movement of the bridge-tree is limited. These sto s may be of any desired form; but I have snown as a desirable form yokes 81 carrying pins 82, which pins extend. down to within suitable cavities formed in the bridge-tree Said cavities, ho wever,cre sufliclently larger than the 111115 to permit all the necessary moveto effectually restrain the lungin in ment of the bridge-tree in the ordinary operation of the machine, while serving as stops nestion. It is necessary in order 31m t ese stops or pins come in contact with the bridgetrce that t too great stress or shock be not in parted to the structure that said stops or, pins shell be yieldingly mounted. The orilice through the yoke S 1' is therefore of such 2*. form that the pin 82 will loosely fit therein, and i also provide a yielding element in the mounting. This yielding element is neces-' snrily of a spring character or construction,

but may be of any desired construction so long as its yielding character is retained. As shown in Fig. 4-, I have found that to provide two collars 83 and 84 on the pin and interpose rubber washersSS and 86 between said collars and the adjacent feces of the yoke is an efficient means for the purpose. The rubher bein compressible permits the in to yield sil ntly in. any direction under 1e impcctot t e bridge-tree when. it comes in con-- tact therewith, thus taking up the shock and providing the necessary elasticity to avoid injury to any port of the structure from cause.

is bridge-tree which is supported and re strained by the means shown and described in the present application may, as shown in Fig. 3, be substantially a ism straight bar of the simplest imsginab e character, and when the machine has reached its regular movement to which it has been prendjusted it is not connected in any manner to the floor of the building, but is Wholly supported from overhead. Contact with the stop-pins 82 only occurs at the time of the starting of the mcchine before it sttsins its regular movement, and after said movement is at tinned there is no contact or engagement .whstever between the bridge tree and the sto s.

fir my com onion application, Serial No. 259,372, filed m s, 1905,@ Sho and describe cnother variety of machine for the same purpose.

' I claim as my invention? x 1. The combination of a sitter structure, means whereb the some is yieldir ly sus pended, c bri ge-tree error: ed below'said sitter structure, means where y the same is yieldingly suspended, s. driving-shaft fertile sitter structure supported bys'md bridge-tree, connections between said shaft end send sitter structure, yieldinvly-supported owertre.nsmission devices coding to ssi shaft, and yieldingly-mounted stops adopted to limit the movement of said bridge-tree.

2. The combination of a sitter structure, supports by means of which the some is yieldingly suspended from overhead, :1 bridge tree arranged below said sitter structure, suports by means of which the same is yieldingly suspended from overhead, u drivingshe b for the sifter structure supported by said bridge-tree, connections between said t driving-shaft and said sifter structure, and T yieidingiy-niounted stops adapted to limit the movement of the bridge-tree.

5. The combination of a sifter structure, overhead suspending devices therefor, a bridgetree arranged below said Sifter structare, overhead suspending devices therefor, 11 drivin shaft for the sift-er structure supported by said bridge-tree, and yieidinglymounted stops carried from an ad acent pori ton of the building adapted to engage with and limit the movementof the bridge-tree.

4. The combination of a sifter structure, overhead suspendin devices therefor, 21 bridge-tree arranged slow said Sifter structure, overhead suspending devices therefor, a shaft supported by the bridge-tree, eccentric connections between said shaft and said sitter structure, suitable power-transmission devices leading to said shaft. and stops adapted to limit the movement of the bridge-tree.

5. The combination of a siftcr structure, means whercbv the same is yieldingly suspended, a bridge-tree arranged below said sifter structure, means whereby the same is yieldingly suspended, at driving-shaft for the sitter structure supported by said bridgc tree, eccentric connections between said shaft and said sifter structure, and independently-sup ortcd stops arranged to engage with and itnit the movement of the in'idgctree.

In witness whereof I have hereunto set my hand and sea], at Toledo, Ohio, this 8th day of May, A. D. 1905.

ALLEN 0. BRAXTINGHAM. [1,. s]

Witnesses Joan HARDY, G. M. ALEXANDER. 

